ios - 如何从 UIImagePickerController 获取最长持续时间的视频

Question

我在我的应用程序中实现了一个 UIImagePickerController，其 videoMaximumDuration 为 10 秒。

但是，在 NSDictionary 中的委托(delegate) imagePickerController:didFinishPickingMediaWithInfo: 的回调中，我只能从 PHAsset 中检索原始视频(而不是修剪后的视频)。

当我选择视频时从字典中获取 NSLog。

info: {
    UIImagePickerControllerMediaType = "public.movie";
    UIImagePickerControllerPHAsset = "<PHAsset: 0x1149af010> E2FA31C6-0232-4A89-8DE5-A4C8CBC98D97/L0/001 mediaType=2/0, sourceType=1, (540x960), creationDate=2019-06-05 14:01:07 +0000, location=0, hidden=0, favorite=0 ";
    UIImagePickerControllerReferenceURL = "assets-library://asset/asset.mov?id=E2FA31C6-0232-4A89-8DE5-A4C8CBC98D97&ext=mov";
}

    UIImagePickerController *picker = [[UIImagePickerController alloc] init];

    if([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeSavedPhotosAlbum])
    {
        picker.delegate = self;
        picker.allowsEditing = YES;
        picker.videoMaximumDuration = 10.0f;
        picker.modalPresentationStyle = UIModalPresentationCurrentContext;
        picker.mediaTypes = @[(NSString*)kUTTypeMovie, (NSString*)kUTTypeAVIMovie, (NSString*)kUTTypeVideo, (NSString*)kUTTypeMPEG4, (NSString*)kUTTypeImage];
        picker.videoQuality = UIImagePickerControllerQualityTypeHigh;
        picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;

        [self._viewCtrl presentViewController:picker animated:YES completion:nil];
    }

如何访问剪辑后的视频？谢谢

Answer 1

我不知道为什么，但通过 UIImagePickerControllerSourceTypePhotoLibrary 更改 UIImagePickerControllerSourceTypeSavedPhotosAlbum 修复了它(现在在 NSSDictionary 中显示 UIImagePickerControllerMediaURL)